Side delivery raking wheel



Oct. 13, 1959 Original Filed Nov C. VAN DER LELY ETA]- SIDE DELIVERY RAKING WHEEL 3 Sheets-Sheet 1 Flt- .1

Oct. 13'. 1959 c. VAN DER LELY ETAL sum DELIVERY RAKINC WHEEL original Filed Nov. 9. 1953 5 Sheets-Sheet 2 Qct. 13, 1959 c, VAN ER LELY E I'AL 2,908,130

SIDE DELIVERY RAKING WHEEL Original Filed Nov. 9, 1953 3 Sheets-S heet 3 United States Patent Office SIDE DELIVERY RAKING WHEEL Cornelis van der Lely and Ary van der Lely, Maasland, Netherlands, assignors, by mesne assignments, to C. van der Lely Canada Ltd., Ottawa, Ontario, Canada, a corporation of Canada Original application November 9, 1953, Serial No. 390,981, now Patent No. 2,860,478, dated November 18, 1958. Divided and this'application October 13, 1958, Serial No. 766,742

27 Claims. (Cl. 56-377) This invention relates to raking members, and more particularly to raking members for use in raking devices having a mobile frame and a substantially horizontal axle upon which one or more raking members are mounted at an angle to the direction of movement of the frame. The raking members in such devices are rotated by their contact with the ground and rakable substance during movement of the mobile frame. The periphery of each raking member has teeth for moving rakable substance over the ground, such teeth being mounted to permit their detflection when the teeth are under a load.

In existing raking devices of this kind, means are provided which permit variation of the elevation of the axle carrying the raking member in its relation to the frame. For example, the axle may be formed by the crankpin of a crank rotatably mounted on the frame. The use of such an arrangement in a device having a plurality of raking members arranged in a row will permit the raking members to adjust themselves individually with respect to elevation, so that a row of raking members is adaptable to substantial unevenness in the terrain. Existing devices depend upon deflection of the circumferential teeth of the raking members for their adaptation to small irregularities or unevenness in the terrain. However, when the teeth of existing raking members undergo even a relatively small deflection, their ability to displace the substance lying on the ground in the desired direction is diminished or lost as the deflected teeth, being less vertical in their position, tend to drag over the rakable substance.

Accordingly, an object of this invention is to provide raking members or raking wheels particularly adapted for. use on a raking device as described and having teeth capable of a high degree of deflection without losing or diminishing their ability to carry along the rakable substance.

In accordance with the invention, the above objective is, realized by providing means which retain the teeth of i the raking member in favorable -positions to perform their raking function, whether the teeth are in a normal condition, or in'a substantially deflected condition.

The foregoing characteristic in raking wheels embodying this invention results in the following" advantages:

.(al The raking wheels provide a more efiicient raking operation resulting in a smaller loss of the rakable substance or material since less material. will remain on the ground following passage of the raking device;

(b) Very uneven terrain may be worked effectively;

,(c) The raking device requires a smaller number of raking members or wheels for the same width than normally necessary in conventional raking members and as a result is less expensive; .and a "(d)flThe axles of the raking members may be rigidly secured to theframe of the raking device since the adaptation of the raking members to the contours of the ground can lieeflected solely by deflection of the teeth, rather than by bodily displacement of the raking members as heretofore.

This is a division of our application filed November 9,

1953, Serial No. 390,981, now Patent 2,860,478. I

Figure l is a top plan view of a raking device of the kind on which raking members embodying the present invention are to be used;

Figure 2 is a fragmentary perspective view of a raking member constructed in accordance with this invention;

Figure 3-is a front elevational view of a raking member constructed in accordance with another embodiment of this invention;

Figure 4 is an enlarged detail view of a linking member employed in the embodiment of Figure 3; and

V Figure 5 is a view similar to Figure 3, but showing a modification in the linkage arrangement;

Figure 6 is a view of the raking member shown in Figure 2, shown through section lines VI-VI in Figure 2; Figure 7 is a sectional view similar to Figure 6, but illustrating a modification of the raking member shown in Figure 2; r

Figure 8 is a section view of the raking member shown in Figure 3 and the modification of Figure 5 through section line VIII-VIII in Figures 3 and 4.

Figure 9 is a sectional view similar to Figure 8, but

illustrating a modification of the raking member shown in Figure 3 and also a further modification of raking member in Figure 5.

Referring to the drawings in detail and initially to Figure 1, a side delivery rake of the kind on which raking members constructed in accordance with the present invention are to be employed, there is shown a frame formed by an elongated beam 1 extending obliquely with respect to the normal direction of movement of the device, as indicated by the arrow 2. Four parallel axles 3, 4, 5 and 6 are rigidly secured to the beam 1 and extend substantially horizontally therefrom. The axles 3, 4, 5 and 6 carry rotatable raking members 7, 8, 9 and 10, respectively. The end axles 3 and 6 carry running wheels '11 and 12 which support the frame and maintain the latter at a predetermined elevation above the ground. The wheels 11 and 12 are preferably self-adjusting or swivel wheels which may, if desired, be locked in any position.

An adjustable draw arm 13 is hingedly connected to the beam 1 permitting an arc of movement relative to thevided in member 16 secured to the beam 1. Thus the rod- 14 may be secured in a position by means of a pin or bolt extending through the aperture of the rod 14 and the aligned aperture of member 16.

In the embodiment shown in Figure 2, the raking member is provided with a hub 42 carrying a circular disc-43. The rim 44 is provided with a plurality of apertures and is concentric with the hub 42 and the circular disc 43, A plurality of bolts 46 are arranged around the periphery of the disc 43. Raking tooth 68, a hook means or link for engaging the adjacent wire comprising loop connection 66, a supporting member 67 and a torsion means 69 are formed from a single piece of resilient steel wire of, for example, 0.4 cm; diameter, The torsion means 69 for Patented Oct. 13, 1 959 v two.- diacent. teeth, reint gral. ,wi h. ea h. ther and. 1 r

joined together at a bent part secured under the head of bolt 46. The torsion means 69 extend through the apertunesfl i; in- 'th e,; rim 44,;each: Ofzzflie apert es functioning as a bearing for one torsion mcanSc.-,69 Beyond-.th rime4 r ca hs eela ire is. cb ll subst ntially righ a lesto; l ld.. h r m; ga st.rauiialv movement relatiye to- -the axis of ,hub 42,- while: permitting the rim 44.;to1respond to heavy 'loadsgby. deflecting elastically. out of itsnormally .-radially.ext ending plane. I Th PQrtions. of. I the .steel wires which are bent at right angles outside ofqthe rim-44 form; -supporting members 67 for the raking -teeth 68" Each integral structure includes a rak' g tooth; 68, andsupportingmember 67 and a torsion means 69 which, together, are somewhat Z-shape d. In this-embodiment, thesteel wire has loop connection;-66 at the. junction of, the rakingtooth 68 and the supporting member..6'7..: By. this. means, the. penetration of rakable substancejfrom the teeth into the. spacebetween related supporting members is avoided. Each loop connection 6,6.consists of a-loop formed in the steel wire extending from the relatedasupporting member 67 in the direction opposed. to the tooth. .68.. Each loop .66, the ends-of which may be intertwinedor otherwise secured together at 66.B,.if. desired, embraces andthereby links the supporting member 67 of the adjacent tooth.

In the claims, the rim 44 and the parts within the rim 44g includingthe hubl 42, disc 43, bolts 46, and torsion means 69, comprise a central portion of the raking member as represented in Figures 2, 6 and 7. Further, for the purpose of the claims, it'is' to be noted that the torsio'n means 69, the supportingmember 67 together with loop 66 and a tooth68 comprise a first portion, a second portion, and a third rakingportion, respectively, 'of a resilient rod.

According to the embodiment of the invention shown in Figure 3, the rim 93 is connected to the disc .91 upon hub90 by steel wires 100 in the same manner as heretofore described for the embodiment shown in Figure 2. The wires 100 extend through apertures 105 in'the related rim 93'and, at the outside of 'the rim, are bent so as to form supporting-members ;101' for raking teeth 102 at-the outerends-of-the steel wires. Each wire is formed-with a loop 103 between the rakingtooth 102 and the related supporting member 101. i

In order-to limit the distance or spacing between the successive teeth, links =104 :(Figure 4) are employed.

Said links 104 are shape of a Figure bent from a-piece ofsteel wireinthe 104a,-engage the-successive-loops 103. In-the embodik mentof Fi'gure-S, which-is exactly like that of -Figure 3 exceptthatthe links, indicated at104b, engagea loop 103 at one side and a supporting member 101 of the adjacent raking tooth at the-other side. In both cases the links serve to: establish the-greatest distance that. may occur between adjacent: raking teeth;

- Invtheclaims, the-rim; 93 andparts within the. rim 93.

including the. hub 90,'sdisc 91 .andwires 100 "comprise a cent-raLportion of the. raking member as. represented inv Figures 3, .5; 8 and.9'. Further, for. the purpose of clarifying-the .claims, itt'iS--tO.b6-,I10i;6d that the wires.100,izthe supportingrrnembers, 101.andthe.-raking teeth .102, cornprise first .-portions-,.secondportions; and-third raking portions, respectively, of resilient rods..

It is considered preferable .intthis jinvention-that-the sc nd'rim-im mb rz f e ch mb diment-lie in differen planes,-- as shown pingFigures ;6:5and 8. Thus, it: will be n t. :11 'Qm;Figure ,61that: the. raking member is disposed laterally-.withathe hub ;42 be ing..forward of the rim 44 With-b thr pace inedistinct but parallel pl nes..- The saggeisftr-ueior the hub 90andthe rim 93 inFigure 58- ir-thea mbodiinent of Figures 7 .and .19, the variouspart u re-identifi rl; y the same referen e.- numerals em: ployed in;- connection; with t-.th,e. corre.sponding.; parts in} F gures 6.21mi 18 respectively, but with the. capi al letter...A-

8. InFigure-B, the links, indicated at lappendedthereto, Thus,.in.,Figure .7, the. raking. members i are all disposed in substantially one radial plane, i.e. the torsion means 69A, the rim 44A, the supporting members 67A, the loops 66A, and the raking teeth 68A are all disposed in one radial plane passing through the disc 43A of the raking-member. In like manner, the raking members of Figure 9 are in substantially one plane, i.e. the torsion..means;A-; therim 93A, the supporting tmeinber... 102., the-lin'k 104A and the raking teeth 102A are: all disposed in one radial plane passing -through=the disc 91A.

The raking members illustrated in the drawings present; supporting members for- 4 the raking 166th which are. directediorward:instherdirection of rotation. Howevenit is also possible to have these-supporting members directed backwards.

It will be understood that the supporting members need not vbe rectilinear. A curved form may be advantageous in-certaincases. Numerous otherivariations in.the;qde1 A scribed construction: are possible. U

The abovedescription and drawingsdisclose several embodiments ofthe invention, and specificlanguage-has. been. employedin describing the several figures. Iti..will,v nevertheless, be understoodthat no-limitations of the. scope ,ofthe invention are thereby contemplated, .and that various alterations-and modificationsmay be made such as would occur to one skilled in the art. to whichthe. invention relates.

We claim:.. V

1.;A-.rakingmembercomprising a-wheel. having a. centralfportion, ,a pair of adjacent resilient supporting members. operatively associated .with said central portion. and extending outwardly and at an angle therefrom, a connecting linkj extending from solely one of said supporting members to the other of said supporting members, said connectinglin'k linking said. supporting members,. and raking-teeth each'extending from the terminal portion of said supporting members and outwardly with respect thereto. 7

2. A raking member according to claim 1 wherein said connecting link consists of book means extending. from the terminal portion of one of said supporting members and jernbracing the ,other supporting member.

3. A raking member according to claim '1 wherein said connecting link consists of a loop extending from theterminal portion of one of said supporting members and embracing the other supporting-member.

4. A raking member accordingto claim 1 wherein saidconnecting link consists of an- 8-shaped-link.-

SVAIakingmember comprising-a hub rotatable about an axis, a rim-member having radial openings there-- through, said rim member being spacedfrom said hub and "substantially concentric therewith, resilient rods =attached to said hub and each having a first portion -ex tending through said openings in said rim-member, said resilientrods each having a second portion: on the-ounside of said rirn member extending atanangle to said firstportion, saidresilient rods eachhaving-a third rake ing portionextending.outwardlyfrom said secondfpor: tion; and connecting :links', eachof said connectinglinks solelydinlcingtogether thesecond portion of one of-said resilient rods'with the secondportion ofthe adjacent rod.

6. Aerakingmember according to .claim 5 wherein said second portions ,.of saidresilient. rods extend from, said openingsin .said .rim members in a direction substantially tangential to said Tim member.

. 7.'A rakingmember according to claim 5 wherein thereis between said second portion and said third portion-ofsaidfresilient -rods an angle of between-90* and- 8. raking member comprising a hub rotatable about an1.axis,ea rim: member, resilient-.rods' attached to. said hubpeachof; said resilientrods having a. firstportionexe tending to:sa.id ;rirn;.: member anda second portion ;on;

normally to said first portion, connecting links, each of said connecting links providing a link between the second portion of one of said resilient rods and the second portion of the adjacent rod, said resilient rods each having a third raking portion extending outwardly from said second portion, said first and second portions forming torsion means for said third raking portion.

9. A raking member comprising a hub rotatable about an axis, a rim member having radial openings therethrough, said n'm member being spaced from said hub and substantially concentric therewith, a disc extending outwardly from said hub and rigidly connected thereto, said disc being within and substantially concentric with said rim member, said disc having at substantially its periphery a plurality of bolts, at least one resilient rod attached to each of said bolts, each of said rods having a first portion extending through said openings in said rim member, said resilient rods each having a second portion at the outside of said rim member extending substantially normally to said first portion, the terminal portion of said second portion having formed therein a loop which extends substantially toward said rim member and embraces said second portion of the adjacent rod, and said resilient rods each having a third raking portion extending from said second portion in a direction substantially opposite to the before-mentioned loop formed in the terminal portion of said second portion.

10. A raking member according to claim 9 wherein each of said bolts has two resilient rods attached thereto.

11. A raking member according to claim 10 wherein two said resilient rods are joined in the vicinity of said bolt.

12. A raking member comprising a hub rotatable about an axis, a rim member having a radial opening therethrough, said rim member being spaced from said hub and substantially concentric therewith, a disc extending outwardly from said hub and rigidly connected thereto, said disc being within and substantially concentric with said rim member, said disc having at substantially its periphery a plurality of bolts, at least one resilient rod attached to each of said bolts, each of said rods having a first portion extending through said opening in said rim member, said resilient rods each having a second portion on the outside of said rim member extending substantially normally to said first portion, the terminal portion of said second portion having formed therein a loop, connecting links extending through each of the aforementioned loops in each of said second portions and being operatively associated with a portion of an adjacent one of said rods, said resilient rodseach having a third raking portion extending outwardly from said second portion.

13. A raking member according to claim 12 wherein said connecting links are figlre eight shaped.

14. A raking member according to claim 12 wherein the operative association of each of said connecting links with an adjacent rod of said resilient rods consists of each said connecting link extending through the loop formed at the terminal portion of said second portions of the aforementioned adjacent rods of said resilient rods.

15. A raking member according to claim 12 wherein the operative association of each of said connecting links with an adjacent rod of said resilient rods consists of a said connecting link extending around the said second portions of the aforementioned adjacent rods of said resilient rods between the aforementitm d 1 p formed therein and said rim member.

16. A raking member according to claim 12 wherein each of said bolts has two resilient rods attached thereto.

17. A raking member according to claim 12 wherein two said resilient rods are joined in the vicinity of said bolt.

18. A raking member comprising a wheel having a central portion, a resilient supporting member operatively associated with said central portion, a raking tooth extending from the terminal portion of said supporting member, a second supporting member extending from said central portion, said second supporting member having formed therein a loop which embraces the first supporting member.

19. A raking member according to claim 18, wherein each supporting member has a. loop and a raking tooth extending from its terminal portion.

20. A raking member comprising a wheel having a central portion, resilient supporting members operatively associated with said central portion, raking teeth extending from the terminal portions of said supporting members, said supporting members having portions defining hook means for hooking said supporting members one into the other.

21. A raking member comprising a wheel having a central portion, supporting members operatively associated with said central portion, raking teeth extending from the terminal portions of said supporting members and a series of individual connecting members extending between the terminal portions of the supporting members.

22. A raking member according to claim 21, wherein each supporting member has a separate connecting member, connecting said supporting member with an adjacent supporting member.

23. A raking member according to claim 18 wherein said supporting members are substantially in' a plane perpendicular to the axis of rotation of the raking mem ber.

24. A raking member according to claim 18 wherein said raking member is substantially uniplanar.

' 25. A raking member according to claim 18, having a frame, running wheels connected to said frame, and a plurality of further similar raking members, said raking member being mounted with said further raking members in overlapping echelon and arranged obliquely with respect to the normal direction of movement of said raking device.

26. A raking member according to claim 18 having a third supporting member adjacent said first mentioned supporting member, said first mentioned and third supporting members each comprising portions of the same resilient wire.

27. A raking member according to claim -18 having a further supporting member adjacent said second supporting member, said second and further supporting members each comprising portions of the same resilient wire.

References Cited in the file of this patent UNITED STATES PATENTS OTHER REFERENCES Information Circular #4, North Carolina State lege, May 1951, page 2. -(Copy in Div. 5.)

Col- 

